Automotive Circuit Breaker Symbol

Circuit breakers come in 3 types.

Automotive circuit breaker symbol. Available in svg png jpg dxf dwg formats. They break down and simplify a diagram large enough to cover an entire table. Switch 1p isolator 1p circuit breaker 1p spst spdt dpst dpdt and more symbols are available in edraw max. Most of us pay little attention to markings on circuit breakers.

For example a few basic symbols common to electrical schematics are shown as. This symbol represents circuit breaker with three poles. To read and understand electrical drawings it is necessary to know the. Symbols can be found in edraw symbol library switch is a device for making and breaking the connection in an electric circuit.

Type 1 are auto resettable and once tripped will attempt to reset the circuit or cycle as the internal elements of the breaker cool down. Yet these markings can be the difference between a safe installation and an unsafe one. What you don t know about circuit breaker markings can trip you up. Circuit breakers symbols for use in electrical pneumatic and hydraulic schematic diagrams.

It connects three phases whenever there is an overload or short circuit in any phase the circuit breaker trips all three phases simultaneously. Horizontal symbol vertical symbol description hcb1 vcb1 circuit breaker 1 pole hcb11th vcb11th thermal circuit breaker hcb11thi vcb11thi current limit thermal hcb11q9 vcb11q9 magneto thermal hcb11q13 vcb11q13 magneto thermal with differential hcb11q17 vcb11q17 differential hcb11q29 vcb11q29 with current protection hcb11q33 vcb11q33 with current protection and lack of voltage protection. Electrical symbols represent different components in electrical schematic block diagrams. Automotive electrical diagrams provide symbols that represent circuit component functions.

1 switch 2 battery 3 resistor and 4 ground. So what does the information on this label mean. 72 dc circuit breaker 74 alarm relay 75 position changing mechanism 76 dc overcurrent relay 78 phase angle measuring or out of step relay 79 ac reclosing relay 81 frequency relay 83 automatic selective control or transfer relay 84 operating mechanism 85 carrier or pilot wire receiver relay 86 lockout relay. Automotive manufacturers use block diagrams of individual circuits.

Such kind of breakers is used in three phase systems in industries. Reading and understanding electrical drawings electrical drawings can represent anything from a single line power distribution to a power or control circuit and are prepared using various symbols for electrical devices and their interconnections with lines representing conductors or wires used for interconnections. Let s look at each item in detail to ensure your installation is as safe as it should be.